concide

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500+ learners.
Prove that centroid of triangles and concide.
Demostrar que baricentro de los triángulos y concide.
If there are 2 vectors that their endpoints concide we can omit them and replace them with their sum (If their sum is nonzero).
Si hay 2 vectores que sus extremos concide podemos omitir a ellos y reemplazarlos con su suma (si su suma es cero).
Palabra del día
la broma